ro quite 与ro single的区别？

[罗非鱼]

在我的menu.list里面有，
### BEGIN /etc/grub.d/10_linux ###
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-686' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set 069ca903-d3d9-43ef-8e1e-02a27109fce3
echo 'Loading Linux 2.6.32-5-686 ...'
linux /vmlinuz-2.6.32-5-686 root=UUID=a28fd0a3-5391-4ac5-8206-3c97e53dc605 ro quiet
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-686
}
menuentry 'Debian GNU/Linux, with Linux 2.6.32-5-686 (recovery mode)' --class debian --class gnu-linux --class gnu --class os {
insmod part_msdos
insmod ext2
set root='(hd0,msdos5)'
search --no-floppy --fs-uuid --set 069ca903-d3d9-43ef-8e1e-02a27109fce3
echo 'Loading Linux 2.6.32-5-686 ...'
linux /vmlinuz-2.6.32-5-686 root=UUID=a28fd0a3-5391-4ac5-8206-3c97e53dc605 ro single
echo 'Loading initial ramdisk ...'
initrd /initrd.img-2.6.32-5-686
}
请问，

root=UUID=a28fd0a3-5391-4ac5-8206-3c97e53dc605 ro single
root=UUID=a28fd0a3-5391-4ac5-8206-3c97e53dc605 ro quite
这两个有什么区别？

[onshoestring]

ro只读，quiet不跑码，single单用户模式(recovery mode)